EP0191721A3 - Leaf-type filter - Google Patents

Leaf-type filter Download PDF

Info

Publication number
EP0191721A3
EP0191721A3 EP86730014A EP86730014A EP0191721A3 EP 0191721 A3 EP0191721 A3 EP 0191721A3 EP 86730014 A EP86730014 A EP 86730014A EP 86730014 A EP86730014 A EP 86730014A EP 0191721 A3 EP0191721 A3 EP 0191721A3
Authority
EP
European Patent Office
Prior art keywords
leaf
fluid
type filter
individual
filtered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86730014A
Other languages
German (de)
French (fr)
Other versions
EP0191721A2 (en
Inventor
Willard L. Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0191721A2 publication Critical patent/EP0191721A2/en
Publication of EP0191721A3 publication Critical patent/EP0191721A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

A leaf-type filter system in which a suction pump is employed to pump filtered fluid from a series of individual filter leaves is connected to the individual leaf chambers via fluid couplings located above the surface of fluid being filtered. The couplings are of inverted U-shape and have a sliding sealing fit with the vertical outlet tube of a leaf and a vertical receiving tube mounted in a manifold or header external of the main filter tank.
EP86730014A 1985-01-28 1986-01-28 Leaf-type filter Withdrawn EP0191721A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/695,473 US4579656A (en) 1983-01-24 1985-01-28 Leaf-type filter
US695473 1985-01-28

Publications (2)

Publication Number Publication Date
EP0191721A2 EP0191721A2 (en) 1986-08-20
EP0191721A3 true EP0191721A3 (en) 1989-01-18

Family

ID=24793131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730014A Withdrawn EP0191721A3 (en) 1985-01-28 1986-01-28 Leaf-type filter

Country Status (5)

Country Link
US (1) US4579656A (en)
EP (1) EP0191721A3 (en)
JP (1) JPS61178008A (en)
AU (1) AU574556B2 (en)
CA (1) CA1274783A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964987A (en) * 1986-11-26 1990-10-23 Johnson Willard L Cross flow filter apparatus
US4859332A (en) * 1986-11-26 1989-08-22 Johnson Willard L Filter leaf cleaning jet apparatus
US4790935A (en) * 1986-11-26 1988-12-13 Johnson Willard L Filter leaf assembly with bonded spacer and sealer
US4919805A (en) * 1986-11-26 1990-04-24 Johnson Willard L Vertical leaf filter flush
US4966718A (en) * 1986-11-26 1990-10-30 Johnson Willard L Cross flow filter method
US5035799A (en) * 1989-08-21 1991-07-30 Clear Flow, Inc. Filter assembly
US7833424B1 (en) 2002-12-26 2010-11-16 Aqua-Aerobic Systems, Inc. Backwash assembly and method having a rotating backwash arm for cleaning cloth filter media
US6858140B2 (en) * 2002-12-26 2005-02-22 Aqua-Aerobic Systems, Inc. Processes and devices for water and wastewater treatment, including stationary cloth media filtration
US7807050B2 (en) * 2002-12-26 2010-10-05 Aqua-Aerobic Systems, Inc. Backwash assembly and method having a rotating backwash arm for cleaning cloth filter media
US7922905B2 (en) * 2005-11-03 2011-04-12 Grodecki William J Leaf filter system and replaceable filter leaf apparatus
KR102423918B1 (en) * 2022-01-10 2022-07-21 김대현 Liquid vertical screen filter and liquid screen filter device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE133185C (en) * 1901-06-12 1902-08-14
US2547205A (en) * 1947-09-03 1951-04-03 Int Projector Corp Filter apparatus
US4116838A (en) * 1977-07-27 1978-09-26 Thomas Frank Lazzarotto Sludge filter
DE2802891A1 (en) * 1978-01-24 1979-07-26 Koester Siegfried Low cost water filter - comprising fibre mat stretched over both sides of partitioned rectangular frame
US4303518A (en) * 1977-11-25 1981-12-01 The Dow Chemical Company Low pressure high volume filter apparatus
GB2094653A (en) * 1981-03-13 1982-09-22 Johnson Willard Lewis Alternately operated sets of filters in filter tank
US4519903A (en) * 1983-01-24 1985-05-28 Johnson Willard L Filter machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460288A (en) * 1891-09-29 Bed-pan
US1407763A (en) * 1920-07-15 1922-02-28 Wayne Oil Tank And Pump Compan Filtering apparatus
US3004669A (en) * 1957-06-05 1961-10-17 Process Filters Inc Filter and automatic leaf shut-off therefor
DE1254593B (en) * 1964-02-22 1967-11-23 Seitz Werke Gmbh Precoat filter with horizontal filter vessel
US3499535A (en) * 1967-01-25 1970-03-10 Industrial Filter Pump Mfg Co Filter leaf
US3474911A (en) * 1967-12-11 1969-10-28 Freeport Sulphur Co Filters
US3559809A (en) * 1969-02-07 1971-02-02 Amf Inc Filter back wash means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE133185C (en) * 1901-06-12 1902-08-14
US2547205A (en) * 1947-09-03 1951-04-03 Int Projector Corp Filter apparatus
US4116838A (en) * 1977-07-27 1978-09-26 Thomas Frank Lazzarotto Sludge filter
US4303518A (en) * 1977-11-25 1981-12-01 The Dow Chemical Company Low pressure high volume filter apparatus
DE2802891A1 (en) * 1978-01-24 1979-07-26 Koester Siegfried Low cost water filter - comprising fibre mat stretched over both sides of partitioned rectangular frame
GB2094653A (en) * 1981-03-13 1982-09-22 Johnson Willard Lewis Alternately operated sets of filters in filter tank
US4519903A (en) * 1983-01-24 1985-05-28 Johnson Willard L Filter machine

Also Published As

Publication number Publication date
JPS61178008A (en) 1986-08-09
AU574556B2 (en) 1988-07-07
US4579656A (en) 1986-04-01
AU5257086A (en) 1986-07-31
EP0191721A2 (en) 1986-08-20
CA1274783A (en) 1990-10-02

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